Apparatus for drying or mixing stone or the like



Aug. 28, 1934. a. G. w. BARTLETT APPARATUS FOR DRYING OR MIXING STONE OR THE LIKE Filed July 22. 1932 ,BENS ON GEORGE WILUJBHRTLETT,

Ways,

V as

Patented Aug. 28, 1934 Application July 22, 1932, Serial No. 624,064

' .In Great firitain July '25, 193 1 I 8 0laims. (fillets-20s) This invention relates to means fordrying or mixing stone or thelike of thetype wherein the stone is mixed in -a rotating drum or container, drying agents beingpassed through the drum 5 fo'rthe purpose of dryingthe stone, the object being to provide improvements therein.

Apparatus made according to this invention comprisesa druniadapted for rotation, a bearing ring fixedly'vsecured to said drum and adapted 1D to rotate therewith, a secondqbearing concentrio with the first and in fixedrelation with the supporting surfaceforthe apparatus, and a plurality of members adapted for free rotation and located between the-two bearing surfaces, and

either bearing members. H

" Referring tbthe accompanying drawingz Fig 1 is a longitudinal part se ctional elevation of one-form of apparatus constructed in accord 1H5 having their pivotal supports independent of "ance with thisinvention; and

Fig. 2 is a-corresponding end elevation; FigI-B is a fragmentary longitudinal sectional elevation' of a modifiedform of apparatus; and Fig-r4 isacorresponding end elevation.

lnFigs; 1 and 2, the drum for is provided with two or more tyres or series of tyres b rigidly secured thereto; Wood or metal cho'cks c are disposed between the drum and the tyres. The tyres are provided with external circumferential 'ribs (1. 1

Two or'r nore"circulanbearing members e are provided, rigidly mounted on supports]. Rails g ai'e*rigidly mounted within the bearing mem hers e, and are provided with internal circur n ferential ribs h. The number and axial spacing of the rails 9 corresponds to the number and axial spacing of the tyresb. l The drum a is mounted within the bearing memberse, each tyre I) being intransverse align ment with a rails, and a series of three" or more flanged wheels or rollers ilis disposed between each tyre b and the complementary railg so that said rollers may be engaged by the ribsid on the tyres-b and the ribs hen the railsjg; The rollers i in eachseries are disposed in spaced circum ferential relationship about the drum' aj and're tained insuch relative positionsbilatie ring 9 which provides bearings fofthe free rotation of the spindles 7c of the rollers. l

The tyres b are disposed, as illustrated, in series of two, and each bearingmember e is provided with two rails g, or one rail with two ribs h. A series of rollers or wheels i may be provided, as illustrated, for each tyre b and rib h.

The rollers of one series are in axial alignment with the rollers of-thead jacent series and have a common spindle, as illustrated.

A grooved or flanged ring m is also rigidly secured to the drum :2, chocks n being disposed therebetween, and a resilient ring or lining o, of 69 leather, 'rubber, or other suitable material, is disposed in the groove p. A driving sprocket, gear Wheel, or pulley may be mounted on the lining 0,

or a chain, belt, or the like may engage said lining so thata rotating drive may be transmitted to $5 the drum a.

' In operation, when the drum is caused to rotate, the tyres I) roll on the rollers i which in turn roll on' the railsg. In effect, the tyres b form the h inner races, and the rails g the outer races of roller bearings.

In the modified fo-rm'of apparatus illustrated in 3 and 4,a hollow boss or trunnion q is secured to each end of the drum a in axial alignment therewith. A tyre or inner race I) is rigidly mounted externally on each boss q. Bearing members 6 are provided at each end of the drum, supported on members 1, Linings 'or outer races 1' are mounted within the bearing members 6. A series of three or more rollers i, in spaced rela- 80 ticnship, are, disposed between the races b, r, and adapted to engage therewith. The. spaced relationship of the rollers i is retained by mem bers s in the form of links pivoted to each other at, and providing bearingsfor, the roller spindles k. i Two series of roller 2 are provided in each bearing, as shown. v

The races 19 and r are provided with ribs d and h which engage grooves t in the rollers The roller spacing members s may be formed by discsproviding bearings forthe roller spine dles k and also acting as shields to close in the ends of the bearings, central holes being provided to co-act with the hollow centres of the bosses q.

The members 8 will travel round the bearing members c with the rollers i.

v The drum' is rotated by any suitablemeans such as. bevelor spur gearing, chain andchain' sprocket, belt and pulley, or the like. Whatl claimand desire to secure by Letters Patent is:- i I 1. Apparatus for drying or mixing stone or the like comprising a drum adapted for rotation, a plurality of bearing members fixedly secured to said drum and adapted to rotate therewith and each provided with two transversely spaced external circumferential ribs, a second series of bearing members concentric with the first and in apparatus, and each provided with two transversely spaced internal circumferential ribs, and a plurality of series of rolling members adapted for free and independent rotation on the bearing members and having their pivotal supports independent of the bearing members, each rolling member comprising two rollers axially connected and spaced, a bearing member of each series and a series of rolling members being arranged in a series, each roller being located between and rolling on a rib on each bearing member in the series.

2. Apparatus for drying or mixing stone or the like as claimed in claim 1 wherein bosses or trunnions are rigidly secured to each end of the drum and directly associated with the bearing members fixed to the drum.

3. Apparatus for drying or mixing stone or the like comprising a drum adapted for-rotation, a plurality of bearing members fixedly secured to said drum and adapted to rotate therewith and each provided with two transversely spaced external circumferential ribs, a second series of bearing members concentric with the first and in fixed relation with the supporting surface of the apparatus, and each provided with two transversely spaced internal circumferential ribs, and a plurality of ,s eries of rolling members adapted for free and independent rotation on the bearing members and having their pivotal supports independent of the bearing members, each rolling member comprising two rollers axially connected and spaced, a bearing member of each series and a,,series of rolling members being arranged in a series, each roller being located between and rolling on a rib on each bearing member in the series, the bearing members on the drum being secured thereto by chocks driven between the external surface of the drum and the internal surfaces of thebearing members.

4. Apparatus for drying or mixing stone or the like comprising a drum adapted for rotation, a.

plurality of bearing members fixedly secured to said drum and adapted to rotate therewith and each provided with two transversely spaced external circumferential ribs, a second series of bearing members concentric with the first and in fixed relation with the supporting surface of the apparatus and each provided with two transversely spaced internal circumferential ribs, and a plurality of series of rolling members adapted for free and independent rotation on the bearing members and having their pivotal supports independent of the bearing members, each rolling member comprising two rollers axially connected and spaced, a ring inter-connecting the rotary members and being positioned between and independent of the concentric bearing members, a bearing member of each series and a series of rolling members being arranged in a series, each roller being located between and rolling on a rib on each bearing member in the series.

5. Apparatus for drying or mixing stone or the like comprising a drum adapted for rotation, a plurality of bearing members fixedly secured to said drum and adapted to rotate therewith and each provided with two transversely spaced external circumferential ribs, a second series of bearing members concentric with the first and in fixed relation with the supporting surface of the apparatus and each provided with two transversely spaced internal circumferential ribs, and a plurality of series of rolling members adapted for free and independent rotation on the bearing members and having their pivotal supports independent of the bearing members, each rolling member comprising two rollers axially connected and spaced, articulated links inter-connecting the rotary members and being positioned between and independent of the concentric bearingimembers, a bearing member of each series and a series of rolling members being arranged in a series, each roller being located between and rolling on a rib on each bearing member in the series.

6. Apparatus'for drying or mixing stone or the like comprising a drum adapted for rotation, a plurality of bearing members fixedly secured to said drum and adapted to rotate therewith and each provided with two transversely spaced external circumferential ribs, a second series of bearing members concentric with the first and in fixed relation with the supporting surface of the apparatus and each provided with two transversely spaced internal circumferential ribs, and a plurality of series of rolling members adapted for free and independent rotation on the bearing members and having their pivotal supports, independent of the bearing members, each rolling member comprising two rollers axially connected and spaced, a bearing member of each series and a series of rolling members being arranged in a series, each roller being located between and rolling on a ribon each bearing member in the series, means being associated with the bearing and rotary members to prevent longitudinal displacement of the drum.

'7 Apparatus for drying or mixing stone or the like comprising a drum adapted for rotation, a plurality of bearing members fixedly secured to said drum and adapted to rotate therewith and each provided with two transversely spaced external circumferential ribs, a second series of bearing members concentric with the first and in fixed relation with the supporting surface of the apparatus and each provided with two transversely spaced internal circumferential ribs, and a plurality of series of rolling members adapted for free and independent rotation on the bearing members and having their pivotal supports independent of the bearing members, each rolling member comprising two rollers axially connected and spaced, a bearing member of each series and a series of rolling members being arranged in a series, each roller being located between and rolling on a rib on' each bearing member in the series, the drum being furnished with a grooved driving ring encircling the drum and fixedly attached thereto and provided with a resilient lin- 8. Apparatus for drying or mixing stone or the like as claimed in claim 7 the driving ring being secured to the drum by chocks driven between the external surface of the drum and the internal surface of the driving ring.

BENSON GEORGE WILLIS BARTLETT. 

